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Facebook AI Research (FAIR)

Facebook AI Research (FAIR)

AI Research Lab (now within MSL)

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Meta abandons open-source AI playbook with first proprietary model from Superintelligence Labs

New Capabilities

Absorbed into Superintelligence Labs; diminished after LeCun's departure and layoffs

For three years, Meta staked its artificial intelligence strategy on giving models away. The company's Llama series became the most widely used open-weight model family in the industry, downloaded hundreds of millions of times. On April 8, 2026, Meta released Muse Spark — the first model built by its new Superintelligence Labs division — and kept it closed. The shift is not subtle: the company that once argued open-source AI would defeat proprietary rivals the way Linux defeated Unix is now competing on their terms.

Updated Yesterday